Find publications, data and maps managed by the
Yukon Geological Survey

Occurrence Details

Occurrence Number
105D 219
Occurrence Name
Brown Cub
Occurrence Type

General Information

Secondary Commodities: copper
Aliases: Whitehorse Copper
Deposit Type(s): Skarn
Location(s): 60.569660 N, -134.937790 W
NTS Mapsheet(s): 105D10
Hand Samples Available at YGS: No


The Whitehorse Copper Belt is located west of Whitehorse and contains 30+ mines, deposits and showings. Many of the occurrences in the Copper Belt are skarns. The skarns form on or near the contact between the Whitehorse batholith and the Lewes River group. The Whitehorse batholith is commonly a grey coarse-grained hornblende granite and ranges from quartz monzonite to granodiorite to diorite. The Lewes River group contains numerous different rock types, most importantly of which is the limestone group, which is essential in the formation of skarns in the area.  A small number of occurrences within the Copper Belt are vein and/or replacement and occur within the Whitehorse batholith granite. 

Located at the contact between the Lewes river limestone and the Whitehorse batholith granite. The visible skarn is garnet rich and has minor amounts of bornite and malachite.

Location Map

Last Updated: Apr 11, 2019

Work History

Year Work Type Comment
1981 Drilling: Diamond 2 holes completed
1979 Drilling: Diamond
1974 Other: Property Evaluation

Regional Geology - Terrane

Group: Intermontane
Affinity: W Laurentia
Name: Stikinia
Realm: peri-Laurentian

Regional Geology - Bedrock

Group/Suite: Whitehorse
Period Max: Cretaceous
Age Max: 112 MA
Period Min: Cretaceous
Age Min: 105 MA
Rock Major: quartz monzonite/granite/monzonite/syenite/granodiorite/quartz diorite
Rock Minor: ash
Reference: Wheeler (1961) - GSC Map 1093A
Geological Unit (1M): mKW
Geological Unit (250K): mKqW

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
095193 2008 Drilling and Geophysical Assessment Report on the Whitehorse Copper Belt Project Diamond - Drilling, Drill Core - Geochemistry, IP - Ground Geophysics 21 2134.10
090899 1981 [Drilling on the Jim 13 and 16 Mineral Claims] Diamond - Drilling 2 316.38
091121 1979 [Diamond Drilling on the Jim and Sue Mineral Claims] Diamond - Drilling 8 872
092025 1974 [Proposed 1974 Exploration of the Cowley Park and War Eagle Properties] Property Evaluation - Other
061172 1974 [Proposed 1974 Exploration of the Cowley Park and War Eagle Properties] Property Evaluation - Other
062018 1973 Preliminary Report on Geological Control to Ore Distribution in the Whitehorse Copper Belt Reverse Circulation - Drilling, Bedrock Mapping - Geology, Petrographic - Lab Work/Physical Studies 665 5555
062227 1966 An Evaluation of the New imperial Mines Ltd. Feasibility - Studies

Related References

Number Title Page(s) Document Type
091121 [Diamond Drilling on the Jim and Sue Mineral Claims] Assessment Report
061172 [Proposed 1974 Exploration of the Cowley Park and War Eagle Properties] Assessment Report
1984-1 The Whitehorse Copper Belt - A Compilation Open File (Geological - Bedrock)
095153 Geological and Geochemical Report for the SPROGGE (Justin) Property Assessment Report
ARMC004838 Longitudinal section map - Gem and Brown Cub Geoscience Map (General)
090899 [Drilling on the Jim 13 and 16 Mineral Claims] Assessment Report
Kindle, E.D., “Summary of Research: Field, 1962”; Geological Survey of Canada, Paper no. 63-1, 1963, (Open Access)

Submit Information to Yukon Geological Survey